James: If memory serves me, Bose has pretty good customer service (it's been many moons ago that I had the Series II's). Give them a call and see what they come up with as far as hooking up the active equalizer to the equipment you have, or what they would suggest you need to get it to work. Without that equalizer, the 901’s suck. You might also look for some old used receivers or preamplifiers with the tape loop function.
Music area: Magnepan 3.6, McIntosh MC2205 amp & C48 preamp, SVS SB13-Ultra, Oppo BDP 95, dbx 3BX, and assorted equipment.
Movie area: EMP Tek E5Bi (were rebadged to R5Bi), RBH/EMP Tek R55Ti, PSA S3000i, Denon X2000, Oppo BDP 83.